Problem in uninstall all national instrument product

[baoxuan]

I have a problem in uninstall labview and reinstall it. I could not found any National instrument icon in control panel and in the program file, i had delete all the antional instrument file using unloker. Now when i want to reinstall it, it show this error. What should i do ?

[Tepig]

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Force Reinstall Non-Working or Corrupt NI Software

[baoxuan]

The installation file means the file that is located in program files after the installation ? (last time installation)

Because i been using unlocker to delete all the national instryment files in program file ( C drive).

[baoxuan]

There is no NIUninstaller in my drive some more so i cant uninstall it.